Model has Ventilated Lenses which Decrease Fogging and Help Cool the Wearer. The Veloce Sunglasses Frame is made of Grilamid TR-90, a Homo-Polyamide Nylon Characterized by an Extremely High Alternative Bending Strength, Low Density, and High Resistance to Chemical and UV Damage. The Veloce has Hydrophilic Rubber Ear and Nose Pieces for a No-Slip Fit. Sunglasses have an Adjustable Nose and Ear Pieces for a Customizable, Comfortable Fit. The Sunglasses fit Small to Large Faces, weigh 1.0oz (28 g) and are covered by a Limited Lifetime Warranty.